I understand what you're saying, basically that triplet 2 octave sweeps can get kind of boring. Here's an example of what I might do:

-----------------12-17-12---12-17-12--------------------------------
--------------13----------13----------13-----------------------------
-----------14----------------------------14---------------------------
--------14----------------------------------14------------------------
-12-15-----------------------------------------15---------------------
----------------------------------------------------------------------

Here's a basic 2 octave A Minor arpeggio (A C E). All you really have to do is resweep or replay part of the arpeggio. This can also make that part of your solo sound a bit more unpredictable than the regular 8th note triplet sweeps. Try this little trick in different parts of the arpeggio until you find some you like.

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